This bar code slot reader module is well designed and contructed with high quality components. It accepts wide range of reading speed and provides very accurate barcode scanning. With different wavelengths, barcodes which are printed on different materials can be easily read to suit the application needs. Because it has the same dimensions as most of barcode slot readers or magnetic stripe readers, integrating this module to most of housings is a snap. It simplifies the development process and can save tooling cost. The TTL output allows the slot reader to be universally accepted by most decoders. It simplifies the development process and can save tooling cost. The TTL output allows the slot reader to be universally accepted by most decoders.The built-in decoder is an advanced and versatile decoding facility for barcoding systems .It works with variety of bar code types and computer interfaces.